Circle of Twilight

The Circle of Twilight seeks to exterminate undead creatures and preserve the natural cycle of life and death that rules over the cosmos. Their magic allows them to manipulate the boundary between life and death, sending their foes to their final rest while keeping their allies from that fate. They walk upon the border of day and night, of light and darkness, of life and death.

Circle of Twilight Spells

Your magical link with the cycle of life and death grants you access to certain spells. At 2nd level, you learn the spare the dying cantrip. At 3rd, 5th, 7th, and 9th level you gain access to the spells listed for that level in the Circle of Twilight Spells table.
Once you gain access to one of these spells, you always have it prepared, and it doesn’t count against the number of spells you can prepare each day. If you gain access to a spell that doesn’t appear on the druid spell list, the spell is nonetheless a druid spell for you.

Druid Level	Spells
3rd	moonbeam, see invisibility
5th	daylight, life transference
7th	aura of life, death ward
9th	destructive wave, reincarnate

Scythe of Harvest

Your attacks hold the power of life and death. Starting at 2nd level, you have a pool of energy represented by a number of d8s equal to your druid level.
When you roll damage for a druid spell, a weapon attack, or an attack while in your wild shape, you can increase that damage by spending dice from the pool. You can spend a number of dice equal to half your druid level or less. Roll the spent dice and add them to the damage as necrotic or radiant damage. If you kill one or more hostile creatures with a spell or attack augmented in this way, you or an ally of your choice that you can see within 30 feet of you regains 2 hit points per die spent to increase the damage, or 4 hit points per die if at least one of the slain creatures was undead.
You regain the expended dice when you finisha long rest

Speech From Beyond

At 6th level, you can cast speak with dead without material components, and you understand what the target of this casting says. It can understand your questions, even if you don't share a language or it is not intelligent enough to speak.
Once you use this feature, you can't use it again until you finish a short or long rest.

Watcher at the Threshold

At 10th level, you gain resistance to necrotic damage and you are always under the effects of a detect evil and good spell, but you cannot detect creatures other than the undead with it.
In addition, while you aren't incapacitated, any ally within 30 feet of you has advantage on saving throws against death.

Return from the Brink

At 14th level, you learn to alter the flow of life and death. Whenever an ally within 60 feet of you that you can see is reduced to 0 hit points, as a reaction you can spend a number of d8’s from your pool equal to half your druid level or less. (minimum 1) Roll the spent dice. The ally regains 1 hit point and gains a number of temporary hit points equal to double the result of the dice roll. The temporary hit points last for 10 minutes.

DM's Guild: Mordenkainen's Codex of Allies